Warping machine



1945- G. WIGGERMANN ,7

. WARPING MACHINE Filed March 6, 1941 s Sheets-Sheet 1 1945 G.WIGGERMANN 2,382,750

WARPING MACHINE Filed March 6, 1941 s Sheets-Sheet 2 Aug. WIGGERMANN vWARPING MACHINE Filed March 6, 1941 s Sheets-Sheet s Patented Aug. 14,1945 WARPING MACHINE Georg Wiggermann, Gladbach-Rheydt, Germany; vestedin the Alien Property Custodian Application March 6, 1941, Serial No.381,952

InG

19 Claims.

The invention relates to warping machines, in which either the beam orthe pressure roller is driven. In machines of this type, the warpingbeam is usually journalled stationarily, whereas the pressure roller,which is positively driven is movably supported either in swinging armsor on a slide bearing. A regulatable friction resistance device is theninserted in the path of the pressure roller. The swinging arm support isa simpler solution of the problem but possesses certain inconveniencesinsofar as, owing to alermany January 25, 1940 on the other hand, thefriction resistance device can be turned as a whole without alterationof its resistance, it is possible to carry out the movements of the beamswing by means of a motor. This motor may be controlled by means of a.hand switch or press button, or by the stop motion device, whereby theseoperations are considerably simplified. The motor may further terationof the turning moment of the swinging arms, the pressure existing at theline of contact between beam and pressure roller alters. This alterationof the pressure becomes especially noticeable if the driving motor forthe pressure roller is oscillated at the same time, that is, if theturning moment of the swinging arms is still further increased.

The object of the invention is to produce a warping machine, in which,notwithstanding the journalling of the pressure roller on swinging arms,the pressure in the line of contact between the beam and pressure rollerremains always invariable. This is effected chiefly by mounting thewarping beam as well as the pressure roller on swinging arms andpressing them together by means of a regulatable friction resistancedevice in such a manner that any alteration of position of the axle ofthe beam or of the roller can take place only by overcoming the frictionresistance. This arrangement makes it further possible to connect onehalf. of the friction resistance device with a worm drive so that, byturning the friction resistance device, the beam can be run in and out,that is, moved towards or away from the pressure roller, by means ofracks hingedly mounted in known manner on its swinging arms; whereas, inthe usual forms of construction, the friction resistance device hadfirst to be lifted off for this operation. A single actuation istherefore sufiicient for running in the beam, the winding of the beambeing then effected under any desired previously adjusted pressure. Theadvantage is, however, further obtained in that the motor is no longerto be mounted on the swinging arm itself but at the rocking axis thereofand the force is transmitted from thence to the shaft of the beam or ofthe roller.

A particular advantage of the invention is that the running in and outof the beam can take place automatically. Since the pressing pressureremains uniform, an accurate positioning of the beam as it is run is nolonger necessary, and as,

serve to rock the beam when the diameter increases. According to theinventiomthis movement is controlled from the pressure roller in thatthe outward movement of this roller by the accumulating thread warp istransmitted to the switch of the motor so that, owing to the outwardrocking of the beam, the pressure roller always returns again into itsinitial position.

With this mechanization of the chief moving procedure, it is no longernecessary to take into consideration the easy accessibility of therunning-on point where the thread warp comes into contact with the beam;nor are additional auxiliary elements required, to bring the beam into aposition favorable for the re-knotting of threads. Consequently,v themovement of the beam, in further development of the invention, can berestricted to the second quadrant and therewith the whole design of themachine can be simplified. The relative movement of the axles of thebeam and of the pressure roller associated therewith would result inmost known machines in especially unfavorable conditions for theuniformity of the pressing pressure. According to the invention on theother hand, not only is the pressing pressure kept uniform, even if beamand pressure roller are in the most unfavorable mutual position, but itis also possible to adjust this pressing pressure within very widelimits. For instance, the loading of the pressure roller may be effectedthrough the intermediary of rocking levers, so that alterations of thepressure in the line of contact between beam and pressure roller causedby alteration of position of the axles are equalized by shifting of thecontact points of the rocker levers.

If the movements take place by means of flowing pressure medium actingin suitable control cylinders, the medium is, according to theinvention, employed at the same time to produce the pressing pressurebetween the beam and pressure roller. For this purpose, the cylinderacting for instance upon the swing arms of the pressure roller isconnected to an automatic regulating valve, so that the pressureexisting in the loading cylinder remains always uniform independently ofthe positions of the piston. The

desired winding pressure during warping can therefore be adjusted andregulated according to the indication of a pressure gauge.

In order to prevent any excess pressure, if the beam rocks out past thenormal end when a flowing pressure medium is used, the cylinder actingupon the swing arms is preferably equipped with a pressure equalizingconduit, short-circuiting the cylinder sides. In a similar manner, whenthe movement of the beam is mechanically controlled, the occurrence ofan undesired pressure between warping beam and its depositing point maybe prevented by making the connection between the beam journalling andthe 'drive means for rocking the same act positively only in onedirection. The part of the drive which then continues to move freely canbe arranged so that it automatically stops the drive.

Finally, the swinging movement in regulating gears built according tothe invention is utilized for the adjusting of the gear which maintainsthe circumferential speed of the beam uniform notwithstanding theincreasing diameter.

Several embodiments of the invention are illustrated by way of examplein the accompanying drawings, in which vFig. 1 shows a warping machineembodying the invention in a somewhat diagrammatic side elevation;

Fig. 2 is an elevational view of a part of Fig. I seen from the rearwith parts in section;

Fig. 3 is a diagrammatic side elevation of another embodiment showingthe swinging of the beam by means of a control motor influenced by thepressure roller;

Fig. 4 is a diagrammatic side elevation of another such embodimentshowing a construction employing a fluid medium for the swinging of thebeam and the production of the predetermined loading;

Fig. 5 is a diagrammatic side elevation of still another embodimentemploying a fluid medium;

and

Figs. 6 and 7 are sectional views showing details of the constructionshown in Fig. 5.

Elements with similar functions are designated by similar referencecharacters. As can be seen from the drawings, the control impulses arederived from the pressure roller in the forms of construction shown andtransmitted onto the beam; it is, however, clear for anyone skilled inthe art that the operation may be carried out conversely. It is alsoevident that all control operations may be derived from one or bothswing arms of the pressure roller and transmitted to one or both swingarms of the beam, or conversely.

The warp beam may be equipped with a continuous shaft or clamping hubs,which permit centering it on the axle l of the beam. By a tube, which ifdesired may have perforations, the discs 3 of the beam are connected toone another. In the form of construction shown, the beam is journalledin swing arms 4, which form a fork together with the strong shaft Iiconnecting them. The beam is driven by a sprocket wheel I revolving onshaft 6 by means of a chain 6, which drives a sprocket wheel 8 coupledwith the hub of the beam. The chain drive is enclosed in tubes (notshown).

By a bar 8 having teeth in its lower side at its free end, any swingingmovement of the beam is transmitted in known manner to a pinion l0 fixedon a shaft II, this shaft being adapted to be turned by means of a handwheel I! through the intermediary of a worm wheel I! and worm Thepressure roller i5 is also movable and mounted in the form ofconstruction illustrated in swing arms l8 rigidly connected by a, shaftl8. By means of a lever system l1, i9, 20, every swing movement of thepressure roller I5 is transmitted to a fork 2|, which is fixed at oneend to a rockably mounted shaft 22, to which the lever arm 20 is alsofixed. The other end of fork 2| is connected to a, pressure ring 23 of amultidisc clutch 24. The toothed discs of the clutch 24 engage in a bushconnected with the worm wheel l3. The coupling pressure is regulated bya weight 25 shiftable on the lever arm 20.

The pressure in the line of contact between the beam and pressureroller, which, during warping, is produced by the pushing apart of beamand roller by the accumulating warp, owing to the connection of boththrough the friction clutch, always corresponds to the frictionalpressure adjusted by the weight 25. Without the necessity to alter thispressure in any way, the beam may, on the other hand, be run out (thatis, moved away from the pressure roller) by hand, by means of the wormgear l3, [4; whereas, a turning of the outer clutch bush fixed on theworm wheel I3 from the shaft ii is prevented by the worm gearconnection.

When running-in the beam (that is, bringing itup to the pressureroller), no pressure increase in the line of contact can occur by therunning-on of the pressure roller, as a swinging away of the pressureroller can only take place by overcoming the frictional pressure of theclutch, the clutch discs slipping, relative to each other when thispressure is overcome.

In the examples shown in Figs. 3 and 4. the swinging points of the arms40. and 4b of the P beams are arranged above the point at which thecontrol rods or bars 9a and 8b respectively act. All movements of thebeam take place exclusively in the second quadrant, that is, in thespace between the perpendicular and the swung oif position of the swingarms,

Fig. 3 illustrates firstly the employment of a control motorji for themovements of the beam, which motor acts through a friction clutch 26upon the worm gear lta, Ma and moves the arm 4a by the turning of thewhole resistance device through the spur wheel lfla and the rack 9a. Theconnection of the motor 3i to the current supply line for rotation inone direction or the other is effected through one of the switches 33,36, either by means of the hand switch 32 or by the swing arm Ilia oithe pressure roller Ilia, through intermediate elements 35, 36, 31, 38,or by the cut-out switch operated by press knob controls on warpingmachine and bobbin frame.

As shown in Fig. 3, the roller 36 of the intermediate elements is thrustby spring pressure against the cam disc 37. By means of a rod 39hingedly connected with the swing arms 5a of the beam, the cam disc 31is turned, when the position or slope of the line of pressure passingthrough the axis of the beam and pressure roller is altered.

The loading of the pressure roller is effected in the construction shownin Fig. 3 by a spring 42 adjustable by means oi a hand wheel 4!. Theadjusted pressure can be read on a scale 43 according to the position ofa hand 44.

The swinging of the pressure roller l5a causes the common contact pointof the levers 41, 48 to be correspondingly displaced.

' The connection ofthe swing arm 4a with the control rack bar 9a iseffected by a slot 21 at the left hand end of, the rack bar 9a, so thatthe connection between the Journalling of the beam and the drivecontrolling its swinging movement is in force transmitting contact onlyin one direction. As soon therefore as the beam, during its swingingmovement, strikes against the depositing point on the floor or on theconveying means, the force transmitting contact is suspended. The rack9a, continuing to move, actuates the switch 28 and therefore completelycuts out the drive.

The operation of the construction shown in Fig. 3 is in deta l asfollows:

After the beam 3a has been mounted between the swing arms ta, as shownin Fig. 3, and the yarn warp has been fixed on the beam, the motor 3! isswitched in through the intermediary of the push knob control or thelever 32, whereby the beam is run in against the pressure roller i511.In the line of contact between beam and pressure roller, there thenexists the adjusted pressure indicated by hand it and corresponding tothe actually desired winding tightness. Owing to the automatic checkingof the worm gear i3a, I ia, the movement of the arms 4a is blocked. Theyarn warp running on during the warping therefore pushes the pressureroller l5a and the control roller 36 away towards the right, as shown inFig. 3, closes the contact 33 and eifect's, through the motor 3!, wormgear l3a, I ia, toothed wheel We and rack 9a, a movement of the beam, in

.the form of construction shown towards the left.

Consequently, the control roller 36 and the pressure roller I5a returnagain into the normal position, the switch 33 opens and the swingingmovement of the beam is interrupted again. As the beam diameter hasfurther increased in the meantime, this operation repeats itself andcontinues until the desired circumference or the desired warp length hasbeen attained.

Owing to the alteration of position of the-line of centers between axisof beam and axis of pressure roller, which may occur as a result of themutual position of beam and pressure roller selectedin the embodimentshown by way of example, the pressure in the line of contact between thetwo would alter also. However, on account of the rotation of a cam disc31, the position of roller 36 is altered and current is supplied to themotor 3! for a longer time. The beam is, therefore, swung farther to theleft, so that the pressure roller can follow the beam and ascendaccordingly in the embodiment shown. At this swinging movement of thepressure roller I5a, the contact point of the shiftable levers 41, 48 isshifted, so that the pressure indicated by the hand 44 is maintained inthe line of contact between beam and roller.

When a thread breaks, the switch 34 is closed by the current of the stopmotion, through the intermediary of a time switch, until the beam hasmoved from the pressure roller 15a as far as is necessary for tying thebroken thread. In similar manner, the beam is automatically swungoutwards to the position where it is deposited on the carriage 5|, asshown in Fig. 4, when the warp thread length has been attained, by thestopping arrangement of the machine.

The hand switch 32 makes it possible for the attendant at any time tosensitively move the beam in one direction or the other'through theintermediary of the motor, or to stop it.

The embodiments, according to Figs. 4 and 5,

show how the same proceedings can be controlled, for instancehydraulically, by employment of fluid media.

In the embodiment shown in Fig. 4, the control rod 8b of the swing arm4b is connected with a piston 62 guided in a cylinder 53. A slide valve54 connects the cylinder with the admission or discharge conduit 55, 58.The controlling of the slide valve is effected, in the embodimentillustrated, from the pressure roller I5b by means of an arm 38aconnected with the swing ar mlfib of the roller, or from a control relay58 influenced by the pushknob switch, stop motion, or cutout switch ofthe machine.

The loading of the pressure roller 45b is effected by a pressure piston31 in accordance with the pressure in the cylinder 52. A regulatingvalve 63 maintains the pressure in the cylinder 62 independently of theposition of the piston 6|, in that it connects the cylinder 62 with oneof the conduits 55 or 56 when the pressure is above or below that set bythe pressure gauge 6 The piston BI is connected with the pressure roller68, in the embodiment illustrated, by a rod 69 and guided with the swingarm t of the beam by rods 65, 66 guided in a slot 61. The pressureroller I5b returns always into its initial position, after it hasefiected, by arm 38a and slide 54 a rocking of the swing arms 6b of thebeam corresponding to the increasing diameter of the warp of the beamaccording to above explained movements. The shape of the lever 48a. isselected so that the pressure indicated by the gauge 66 is maintained inthe line of contact between the beam and roller, and also so that thestresses in rods 66, 66, will remain substantially constant regardlessof the position occupied by roller 68 on the lever. As the slope of theline of pressure passing through the beam axle and pressure roller axlealters with the rocking of the beam, and as, on the other hand, thepressure in the cylinder 62 remains constant, the loading of thepressure roller l5b must also be altered according to the alteration ofposition of said line of pressure. This is attained by the shifting ofthe pressing roller 68 on the arm 48 owing to the shape of slot 61.

Figs. 5, 6, and 7 illustrate an embodiment of .the invention, in whichthe warp beam is moved through the first and second quadrant in themanner much used up to the present, whereas the embodiments shown inFigs. 3 and 4 may be employed with advantage also for movement in theother quadrants, for instance suspended mounting of the beam.

The control rod is in this instance hinged above the axle 5c of theswing arm 40 and connected with a piston H guided in a cylinder 12. Themovement of the piston is controlled by the slide valve 54a. This slidevalve can connect, according to its position in a slide box 13, as shownin Fig. 6, the conduits 55a, 56a with conduits 14, 15 leading to thecylinder 12, as soon as the control slide 54 has been actuated from thepressure roller I50 through the intermediate elements I60, 51, or by thehand switch 32a, or by the control relay 58a. In the mutual positionshown in Fig. 5, a comparatively slight oscillation of the power stationfrom the axles of beam and pressure roller occurs.

In order to provide an easy depositing of the beam, and to prevent theoccurrence of an excess pressure, the cylinder 12 is equipped with anequalizing conduit 84, as shown in Fig. '1, which short-circuits the twoends of the cylinder when the piston has completed a travel :1:corresponding to the growth of the beam to the'desired diameter. At therunning-in oiv the beam, a check valve 85 causes the overflow conduit toremain out of action in this direction of move- 5 merit.

Finally, it is shown in Fig. 5 how the swinging movement of the arms 40oi the beam can be utilized to maintain uniform the circumferentialspeed of the beam, especially if the regulating gar is arranged on theswing arm lc. With this object in view, for instance the adjuster of theregulating gear, a regulating motor Bl or the like may be hingedlyconnected by rods 82, 83 with the swing arm 40 so that, according to thei5 alteration of angular position of arm 4c, the ratio of transmissionis automatically altered.

It is evidently also possible to make the arrangement so that, when thepressure roller lie is driven, the adjuster oi the regulating gearcontrolling the driving speed is operated by the swinging movement ofthe arms.

What I claim as my invention and desire to secure by Letters Patent ofthe United States is:

1. In a warping machine, a beam element, a 1:5 pressure roller elementcoacting with said beam element, means for rockably supporting each ofsaid elements, a driving means arranged coaxially with the rocking axisor one of said ele-- ments and drivingly connected with said latter 3nelement, means for pressing said elements together with a predeterminedpressure, said last means arranged so that its resistance must beovercome to alter the relative position of said elements, frictionresistance means, rack and pinion means connecting the rockable supportof said driven element with said friction resistance means, and meansincluding said friction resistance means to move said driven elementthrough the intermediary of said rack and pinion means.

2. In a warping machine, a beam element, a pressure roller elementcoacting with said beam element, means for rockably supporting each ofsaid elements, a driving means arranged 00- axially with the rockingaxis of one of said elements and drivingly connected with said latterelement, means for pressing said elements together with a predeterminedpressure, said last means arranged so that its resistance must be 0overcome to alter the relative position of said elements, frictionresistance means including a rack and pinion for connecting the rockablesupport of said driven element with said friction resistance means,means including said friction 65 resistance means to move said drivenelement through the intermediary of said rack and pinion means, and amotor for operating said means to move said driven element.

3. In a warping machine, a beam element, a pressure roller elementcoacting with said beam element, means for rockably supporting each ofsaid elements, a driving means arranged coaxially with the rocking axisof one of said elements and drivingly connected with said latterelement. for pressing said elements together with a predeterminedpressure, said last means arranged so that its resistance must beovercome to alter the relative position of said elements, frictionresistance means including a rack and pinion for connecting the rockablesupport of said driven element with said friction resistance means,means including said friction resistance means to move said drivenelement through the intermediary of said rack and pinion means, a motorfor operating said means to move said driven element, and a switch forcutting out said motor actuated by the movementoi the rockable supportof said driven element.

4.,In a warping machine, a beam element, a pressure roller elementcoacting with said beam .element, means for rockably supporting each ofsaid elements, a driving means arranged coaxially with the rocking axisof one of said elements and drivingiy connected with said latterelement, means for pressing said elements together with a predeterminedpressure, said last means arranged so that its resistance must beovercome to alter the relative position of said elements, frictionresistance means including a rack and pinion for connecting the rockablesupport of said driven element with said friction resistance means,means including said friction resistance means to move said drivenelement through the intermediary of said rack and pinion means, a motorfor operating said means to move said driven element, and switch meansoperated by the rocking of said other element to control the supply ofcurrent to said motor.

5. A warping machine as described in claim 4, wherein the rockingmovement of said driven element is restricted to the second quadrant.

6. A warping machine as described in claim 1, wherein the meansconnecting the rockable support of said driven element with saidfriction resistance means include a connection adapted to transmit forcepositively in only one direction.

7. In a warping machine, a rockably-supported warp beam, arockably-supported pressure roller coacting therewith, and means forpressing said roller and warp beam together with a predeterminedpressure, said last means including at least one rocking lever and meansfor varying the effective leverage of said lever in accordance with theslope of a line passing through the centers of said warp beam and saidpressure roller, whereby the pressure between said beam and saidpressure roller is maintained uniform notwithstanding the change of theposition of said line through said centers.

8. In a warping machine, a beam element, a pressure roller elementcoacting with said beam element, means for rockably supporting each ofsaid elements, fluid pressure means adapted to act upon the rockingsupport of one of said elements to move the latter with respect to theother element, fluid pressure means adapted to press said other elementagainst said first element with a uniform pressure, and means controlledby the rocking of the support or said other element for operating saidfirst fluid pressure means.

9. A warping machine as described in claim 8, comprising an automaticregulating valve and a pressure gauge connected with said valve so thatthe pressure with which said elements are pressed together can beadjusted and continuously read.

10. A warping machine as described in claim 8, wherein said first fluidpressure means is provided with an equalization conduit adapted tointerconnect its cylinder spaces at both sides of its piston when thelatter passes a given point.

11. A warping machine as described in claim 8, comprising driving meansfor rotatably driving one of said elements, a regulating gear forcontrolling the speed at which said driven element is rotated, and meansfor controlling said regulating gear by the movement of the elementrocked by said first fluid pressure means.

12. In a warping machine, a swingably mounted beam element upon whichsheet material such as warp yarn is adapted to be wound, a swingablymounted pressure roller element coacting with said beam element, meansfor rotatably driving one of said elements to cause said material to bewound on said beam element, means for yieldingly pressing one of saidelements toward the other, means cooperating with said other element forresisting a predetermined pressure of said pressing element, and meanscontrolled by said pressure resisting means for permitting said beamelement away to rock from the pressure roller element an amountcorresponding to the increase in diameter of the material on the beamelement.

13. A machine as described in claim 12 wherein said pressure resistingmeans includes a slip coupling, rack and pinion means connecting saidcoupling with one of said elements, and worm gear means for turning saidcoupling to move said connected element through the intermediary of saidrack and pinion means.

14. In a warping machine, a beam element, a pressure roller elementcoacting with said beam element, means for rockably supporting each ofsaid elements, a driving means arranged coaxially with the rocking axisvof one of said elements and drivingly connected with said latterelement, means for pressing said elements together with a predeterminedpressure, said last means arranged so that its resistance must beovercome to alter the relative position of said elements, frictionresistance means including a rack and pinion for connecting the rockablesupport of said driven element with said friction resistance means,means including said friction resistance means to move said drivenelement through the intermediary of said rack and pinion means, a motorfor operating said means to move said driven element, said meansconnecting the rockable support of said driven element with saidfriction resistance means including a connection adapted to transmitforce positively in only one direction, and switch means for cutting offsaid motor adapted to be operated by the rockable support of said drivenelement when the latter reaches a certain position.

15. In a warping machine, a swingably mounted beam element upon whichsheet material such as warp yarn is adapted to be wound, a swingablymounted pressure roller element coacting with said beam element, meansfor rotatably driving one of said elements to cause said material to bewound on said beam element, means for yieldingly pressing one of saidelements toward the other, and means cooperating -with said otherelement for resisting a predetermined pressure of said pressing element,said last means permitting said beam element to rock away from thepressure roller'element an amount corresponding to the increase indiameter of the material on the beam element when said predeterminedpressure is exceeded.

16. In a warping machine, a, swingably mounted beam element upon whichsheet material such as warp yarn is adapted to be wound, a swingablymounted pressure roller element coacting with said beam element, meansfor rotatably driving one of said elements to cause said material to bewound on said beam element, and means for permitting each of saidelements to swing about its respective swing axis in response to thepressure produced by the increasing diameter of material wound on saidbeam element.

17. A warping machine according to claim 16 in which the swingingmovement of one of said elements operates said last-named means tocontrol the swinging movement of said other element.

18. In a warping machine, a swingably mounted beam element upon whichsheet ma-'- terial such as warp yarn is adapted to be wound a swingablymounted pressure roller element coacting with said beam element, meansfor rotatably driving one of said elements to cause said material to bewound on said beam element, a let-01f device for resisting the swingingmovement of said beam element away from said roller element, and meanscontrolled by the swinging of said roller element for initiating theoperation of said let-off device.

19. In a warping machine, a swingably mounted beam element upon whichsheet material such as warp yarn is adapted to be wound, a swingablymounted pressure roller element coacting with said beam element, meansfor rotatably driving one of said elements to cause said material tobewound on said beam element, a. let-ofl device for resisting theswinging movement or said beam element away from said roller element,and means actuated by the swinging movement of said roller element forcontrolling said let-of! device.

GEORG WIGGERMANN.

Certificate of Correction Patent No. 2,382,760. August 14, 1945.

GEORG WIGGERMANN It is hereby certified that errors appear in theprinted specification of the above numbered patent requiring correctionas follows: Page 4, first column, line 66, before the Words for pressinginsert means; page 5, first column, line 12, for away to rock read torock away; line 16, for the claim reference numeral 12 read 15; and thatthe said Letters Patent should be read With these corrections thereinthat the same may conform to the record of the case in the PatentOfiice.

Signed and sealed this 9th day of November, A. D. 1948.

[SEAL] THOMAS F. MURPHY,

Assistant Commissioner of Patents.

